<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <style>
        .fullpage{
            width: 100%;
            height: 100%;
            position: fixed;
            top: 0;
            left: 0;
            background-color: yellowgreen;
        }
        .common{
            position: fixed;
            top: 0;
            left: 0;
            z-index:100;
            width: 100%;
            height: 0%;
            overflow-x: hidden;
            overflow-y: auto;
        }
        .see{
            top: 100px;
            position: absolute;
            left: 100px;
            height: 100px;
            width: 100px;

        }

    </style>
</head>
<body>
   <div class="fullpage">

   </div>
    <div class="common">
        <div class="see"></div>
    </div>
</body>
</html>